See nature preserves that are funded by regulated big game hunting of the preserved nature.
It's a fun moral question. At what point do you give up trying to make someone/a population healthier and say "well if you're going to be this way, we might as well get some use out of you"?
And the legal option makes it less likely that organized crime will jump in to offer the service.
(To me, it seems) The same people who screamed to legalize weed a few years ago are vehemently against alcohol and gambling.